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参数资料
| 型号： | LT1309CS8#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.5 A SWITCHING REGULATOR, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 0.150 INCH, PLASTIC, SO-8 |
| 文件页数： | 1/8页 |
| 文件大小： | 320K |
| 代理商： | LT1309CS8#TR |
1
LT1309
The LT 1309 is a 500kHz micropower DC/DC converter
for Flash Memory. The regulator features Burst ModeTM
operation with a 0.5A, 300mV switch, enabling 85%
efficiency at the fixed 12V output. High frequency opera-
tion permits the use of small value, and therefore small
size,surfacemountinductorsandcapacitors.TheLT1309
comes in an 8-lead SO package allowing extremely
compact PC board layouts. These features make the
device attractive for PCMCIA cards, cellular phones and
other applications where PC board space is limited.
Quiescent current is 650
A decreasing to 9A when the
part shuts down. The device includes a soft start feature
which limits supply current transients during turn-on.
The LT1309 contains a VPP VALID comparator with a
logic output that goes low when the output voltage is
ready to program 12V Flash Memory. This comparator
simplifies the interface to external control logic.
500kHz Micropower
DC/DC Converter
for Flash Memory
S
FEATURE
D
U
ESCRIPTIO
I
60mA Output Current at 12V from 3V or 5V Supply
I
Shutdown to 9
A
I
VPP VALID Comparator
I
Up to 85% Efficiency
I
Switching Frequency: 500kHz (Typical)
I
Quiescent Current: 650
A
I
Low VCESAT Switch: 300mV at 0.5A (Typical)
I
Soft Start Reduces Supply Current Transients
I
Uses Low Value, Small Size,
Surface Mount Inductors
I
Available in 8-Lead SO Package
U
A
O
PPLICATI
TYPICAL
12V, 60mA Flash Memory Programming Supply
12V Output Efficiency
LOAD CURRENT (mA)
1
70
EF
FI
CI
EN
CY
(%
)
72
74
76
78
86
10
100
LT1309 TA02
80
82
84
VIN = 5V
VIN = 3.3V
VIN
VSW
L1*
10
H
D1
VPP 12V, 60mA
SENSE
VPP VALID
LT1309
ON/OFF
VPP VALID
R1
1M
LT1309 TA01
C3
0.1
F
C2
1
F**
C1
4.7
F
MURATA ERIE LQH3C100K0YM00
CERAMIC
MOTOROLA MBR0530
*
**
ON/OFF
VIN
3.3V TO 5V
SOFT
START
PGND
GND
+
U
S
A
O
PPLICATI
I
Flash Memory VPP Generators
I
Type II and III PCMCIA Card DC/DC Converters
I
3V to 12V, 5V to 12V Converters
I
Portable Computers and Instruments
I
Cellular Telephones
I
DC/DC Converter Module Replacements
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode is a trademark of Linear Technology Corporation.
FOR INFORMATION PURPOSES ONLY
OBSOLETE:
Contact Linear Technology for Potential Replacement
相关PDF资料 |
PDF描述 |
|---|---|
| LT1431CJ8 | TWO TERM VOLTAGE REFERENCE, CDIP8 |
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| LT170AC | BRUSHLESS DC MOTOR CONTROLLER, 0.015 A, PDSO4 |
| LT261A | SPECIALTY ANALOG CIRCUIT, PDSO4 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LT130Z | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:GREEN OVAL LAMP LED |
| LT131 | 制造商:SEOUL 制造商全称:Seoul Semiconductor 功能描述:RED OVAL LAMP LED |
| LT1310 | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.7A, 1.5MHz Synchronous Step-Up DC/DC Converter with Output Disconnect |
| LT1310EMSE | 功能描述:IC REG BOOST ADJ 1.5A 10MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LT1310EMSE#PBF | 功能描述:IC REG BOOST ADJ 1.5A 10MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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